Re: [Xen-devel] [PATCH 5/7] libxc: implement gntshr for minios

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Marek Marczykowski, le Tue 23 Apr 2013 05:17:59 +0200, a écrit :
> +static int minios_gntshr_munmap(xc_gntshr *xcg, xc_osdep_handle h,
> +                               void *start_address, uint32_t count)
> +{
> +    int i;
> +    uint32_t gref;
> +
> +    for (i = 0; i < count; i++) {
> +        gref = gnttab_find_grant_of_page(start_address + i * PAGE_SIZE);

This can become quite expensive. Can we really not afford allocating the
list of grants, keeping its adresse in the xc_osdep_handle?

Samuel

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